WO2017052141A1 - Chainless drive system for bicycle - Google Patents

Chainless drive system for bicycle Download PDF

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Publication number
WO2017052141A1
WO2017052141A1 PCT/KR2016/010397 KR2016010397W WO2017052141A1 WO 2017052141 A1 WO2017052141 A1 WO 2017052141A1 KR 2016010397 W KR2016010397 W KR 2016010397W WO 2017052141 A1 WO2017052141 A1 WO 2017052141A1
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WO
WIPO (PCT)
Prior art keywords
gear
shaft
output
fitted
input
Prior art date
Application number
PCT/KR2016/010397
Other languages
French (fr)
Korean (ko)
Inventor
임진환
Original Assignee
주식회사 아덴
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Filing date
Publication date
Application filed by 주식회사 아덴 filed Critical 주식회사 아덴
Publication of WO2017052141A1 publication Critical patent/WO2017052141A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M15/00—Transmissions characterised by use of crank shafts and coupling rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/22—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric
    • F16H21/28—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric with cams or additional guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/62—Gearings having three or more central gears
    • F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another

Definitions

  • the present invention relates to a bicycle chain drive system for a bicycle, and more particularly, to a bicycle chain drive system using a gearbox-type transmission located in the center of a bicycle frame and a plurality of links as power transmission means.
  • a bicycle has a structure in which power is transmitted by a chain connecting a pedal side sprocket (chain ring) and a rear wheel side sprocket.
  • a chain type bicycle is configured in multiple stages of sprockets having different sizes on the pedal side and the rear wheel side, and the speed ratio is adjusted by moving the chain between the sprockets.
  • chain bicycles are not hygienic because the lubricant applied to the chains gets on the clothes or the body, and the clothes are caught between the chains and the sprockets, or the chains are separated from the sprockets, which exposes the user to danger or requires frequent repairs. It implies In addition, the chain type bicycle can not be shifted at the time of stop because the shift is made sequentially while running, there was a problem that it takes some time to obtain the desired gear stage.
  • Patent Document 1 is a non-chain bicycle power transmission device having a power transmission shaft for transmitting the driving force of the crankshaft to the rear wheel using the first bevel gear formed on both ends, the crankshaft Or a fixed gear group in which two or more fixed gears having different diameters are sequentially formed as an integral type on the output pin for rotating the rear wheels; A hollow transmission shaft rotatably installed adjacent to the crank shaft or the output pin; An idle gear group including idle gears that are freely rotatable independently of the shift shaft to engage with the fixed gears; Shift lock means built into the shift shaft and configured to selectively fix any one of the idle gears; And a second bevel gear formed at one side of the transmission shaft to be engaged with the first bevel gear of the power transmission shaft, and configured to form a guide groove along a length direction of the transmission shaft.
  • the power transmission device for a chainless bicycle such as Patent Document 1 applies a bevel gear to the pedal side and the rear wheel, respectively, and transmits power through the drive shaft therebetween, so that the weight increase and the noise due to the structural rigidity of the frame are increased. It also has disadvantages such as low power efficiency due to wear and tear, frictional loss and the limitation of shifting, and manufacturing cost also has disadvantages that are more expensive than the chain.
  • An object of the present invention is to achieve aesthetically excellent design with a balanced structure in appearance by eliminating the drive shaft protruding to the outside without applying the bevel gear applied to the conventional bicycle chainless body, and at the same time can be reduced noise and friction loss body It is to provide a phosphorus drive system.
  • Still another object of the present invention is to provide a bicycle bodyless drive system to which a gearbox-type transmission in which a plurality of rows of input gear sets (A) is arranged on one side of a carrier and an output gear set (B) of a plurality of rows is arranged on the other side thereof is applied.
  • a gearbox-type transmission in which a plurality of rows of input gear sets (A) is arranged on one side of a carrier and an output gear set (B) of a plurality of rows is arranged on the other side thereof is applied.
  • a bicycle chain drive system for a bicycle includes a crank shaft into which a crank is fitted, and a gear housing including an input gear shaft and an output gear shaft continuously arranged in a line on a parallel line at a distance from the crank shaft; A rear shaft into which the rear shaft gear is fitted; A connecting gear meshed with the rear axle gear and rotatably disposed in a link stay; And a plurality of links rotatably arranged in parallel with each other between the output part fitted to the output gear shaft of the gear housing and the connecting gear, the plurality of links being longitudinally at an inclined angle according to the rotation of the crankshaft. Rotate so as not to interfere with each other in the transverse direction.
  • a crank gear is fitted to the crankshaft of the gear housing of the present invention, an input gear is fitted to the input gear shaft of the gear housing, an output part is fitted to the output gear shaft of the gear housing, and an input of the input gear shaft of the gear housing is input.
  • the carrier can be fitted between the gear and the output of the output gear shaft.
  • One side of the carrier of the present invention is a set of input gear set (A) consisting of a plurality of rows and the other side of the carrier is arranged an output gear set (B) in a plurality of rows, the input gear set (A) and the output gear set (B) Each of the), and the sun gear is fixed to each of the input gear shaft and the output gear shaft;
  • Gear housing of the present invention has a ratchet disposed on the outer side of the ring gear of the input gear set (A) and the output gear set (B), respectively, the ratchet is formed with a plurality of cam grooves on the outer periphery to fix the teeth of the ring gear It may further include a camshaft.
  • Bicycle chain drive system of the present invention and the crank is fitted crank shaft;
  • An input gear shaft and an output gear shaft which are arranged in parallel with the crank shaft at intervals and in which a plurality of planetary gear devices C are rotatably fitted;
  • a camshaft having a plurality of cam grooves into which ratchets for selectively fixing at least one of the plurality of planetary gear devices (C) are fitted;
  • a rear shaft into which the rear shaft gear is fitted;
  • Bicycle chain drive system of the present invention has the advantage that it is aesthetically easy and the user can easily ride a bicycle because the drive shaft does not protrude outward as compared to the conventional chainless bicycle to which bevel gears are applied.
  • Bicycle chain drive system of the present invention is to apply a plurality of links between the transmission and the rear wheels to enable continuous power transmission, there is an advantage that anyone can easily shift.
  • the gearbox-type transmission using the input gear set (A), the carrier and the output gear set (B) disposed inside the gear housing is disposed at the center of the bicycle frame to distribute the weight distribution of the entire bicycle. From the dynamic point of view, there is an advantage that can be configured stably and efficiently.
  • FIG. 1 is a perspective view of a bicycle to which the chainless drive system for a bicycle of the present invention is applied,
  • FIG. 2 is a schematic perspective view of a gear housing which is a main part of the present invention.
  • FIG. 3 is a perspective view showing the inside of a gear housing that is a main part of the present invention.
  • FIG. 5 is a perspective view showing a state in which a ratchet is disposed in a cam groove of a camshaft, as shown in FIG.
  • FIG. 6 is a perspective view showing the transmission of FIG. 5 seen from the output side;
  • FIG. 7 is a view showing a state in which a plurality of links which are main parts of the present invention are inclinedly arranged;
  • FIG. 8 is a diagram illustrating geometrically a movement relationship between two overlapping links among a plurality of links of FIG. 7;
  • FIG. 9 is a schematic cross-sectional view of a transmission that is a main part of the present invention.
  • FIG. 10 is a view showing a phase shift state of the transmission which is the main part of the present invention.
  • the bodyless bicycle of the present invention is fitted with a front wheel 10 between the forks 16 disposed on one front side of the frame 25 to be rotatably fixed to the front axle 14.
  • the rear wheel 20 is rotatably fixed to the rear axle 140 between the seat stays 27 arranged on the other rear side of the back 25.
  • the seat stay 27 and the link stay 155 which will be described later are a part of the frame 25 and are integrally formed.
  • the saddle 29 is disposed at a predetermined portion of the frame 25 so that the user can sit.
  • the handle 30 is a flat bar (Riser) or a riser bar (Riser bar) is applied to one side, the shift lever 35 for adjusting the transmission to be described later is disposed on one side, and the brake lever (not shown) Is not assigned).
  • the bicycleless drive system for a bicycle includes a gear housing 50 and a rear axle 140 disposed at an intersection located at the center of a frame 25 forming a vehicle body of a bicycle. And a plurality of links 150 rotatably disposed between the gear housing 50 and the rear shaft 140.
  • the gear housing 50 is continuously arranged in a row on a parallel line with a crank shaft 40 into which the crank 38 is fitted, and at a distance from the crank shaft 40. It is provided with an input gear shaft 60a and an output gear shaft 60b.
  • the input gear 65 is fitted to the input gear shaft 60a of the gear housing 50, and the output part 55 is fitted to the output gear shaft 60b of the gear housing 50.
  • the crank 38 is then interlocked with a pedal (not shown).
  • a transmission composed of a planetary gear set C, a ratchet 85, and a cam shaft 95 to be described later together with an input gear shaft 60a and an output gear shaft 60b provided in the gear housing 50 are disposed.
  • the gear housing 50 is described as being mixed with the gearbox-type transmission, but it is understood that the same concept as the gearbox-type transmission excludes only the crankshaft from the gear housing.
  • crank gear 42 is fitted coaxially to the crank shaft 40 of the gear housing 50, the input and output gear shaft (60a, 60b) In the input gear 65, the sun gear 70 and the carrier 120 are inserted in sequence.
  • the carrier 120 is disposed between the input gear 65 of the input gear shaft 60a of the gear housing 50 and the output part 55 of the output gear shaft 60b.
  • one side of the carrier 120 has an input gear set A having a plurality of rows, and an output gear set B having a plurality of rows is disposed at the other side of the carrier 120.
  • the input gear set (A) and the output gear set (B) can be appropriately set the number of columns according to the user's request, as shown in Figure 3, 5 and 6 as an embodiment, the input gear set ( Only when A) is applied in two rows and the output gear set B is applied in three rows will be described.
  • one side of the carrier 120 is an input side in which the input gear set A is arranged in two rows, and the carrier ( The other side of 120) is an output side in which the output gear set B is arranged in three rows).
  • crank gear 42 disposed on the crank shaft 40 is meshed with the input gear 65 disposed on the input gear shaft 60a, and the sun gear 70 is input behind the input gear 65. Coaxially fixed to the gear shaft 60a is fitted.
  • Each of the input gear set A and the output gear set B which are disposed on both sides of the carrier 120, respectively, as illustrated in FIGS. 3, 5, and 6, the input gear shaft 60a and the output.
  • the input gear set A and the output gear set B are disposed on both sides of the carrier 120 (see FIG. 3), respectively.
  • the sun gear 70 is fixed to the input gear shaft 60a and the output gear shaft 60b, respectively. Then, the sun gear 70 disposed on the input side is disposed behind the input gear 65 meshed with the crank gear 42 of the crankshaft 40, as shown in Figure 5 and 6, It is meshed with the planetary gear 80.
  • the input gear 65 is also fixedly fitted to the input gear shaft 60a.
  • a ring gear 90 is disposed outside the plurality of planetary gears 80, and the ring gear 90 is engaged with the plurality of planetary gears 80 disposed therein.
  • the planetary gear device (C) is a configuration including the carrier (120), the carrier 120 and And a sun gear 70 disposed in a plurality of rows on one side (input side) and the other side (output side) of the carrier 120 and fixedly fitted to the input gear shaft 60a and the output gear shaft 60b, respectively,
  • a plurality of planetary gears 80 meshed with the sun gear 70 and ring gears 90 meshed with the planetary gears 80 may be included. That is, it may be composed of the input gear set (A) and the output gear set (B) around the carrier 120, the planetary gear including the carrier 120, the input gear set (A) and the output gear set (B) It can also comprise a device (C).
  • the gear housing 50 is a ratchet 85 disposed outside the ring gear 90 of the input gear set (A) and the output gear set (B), respectively.
  • the ratchet 85 further includes a camshaft 95 having a plurality of cam grooves 82 formed on an outer circumference thereof to fix the teeth 93 of the ring gear 90.
  • the rear shaft 140 is fitted with the rear shaft gear 142 on one side thereof. That is, the rear shaft gear 142 is fitted coaxially to the rear shaft 140.
  • the rear gear 142 is meshed with the connecting gear 152 fitted to the connecting gear shaft 154, the connecting gear 152, a plurality of connecting pins 157 for connecting a plurality of links 150 to be described later. ) Is placed.
  • the connecting gear 152 is rotatably fitted to the connecting gear shaft 154 disposed in the link stay 155 that is a part of the frame 25.
  • the connection pins 157 are disposed at a predetermined distance from the rear shaft 140.
  • the plurality of links 150 are connected to the output gear 55 fitted to the output gear shaft 60b of the gear housing 50 and the coupling gear 152 meshed with the rear shaft gear 142. It is arranged in parallel rotatably between.
  • the number of the plurality of links 150 is applied to three so that there is no dead point generated when one or two links are applied, but the number may be changed according to a user's request.
  • the plurality of links 150 are rotated so as not to interfere with each other in the longitudinal direction and the transverse direction at an inclined angle according to the rotation of the crankshaft 40.
  • the plurality of links 150 are fitted to a plurality of output pins 57, one side of which is arranged at intervals on the output unit 55, the other side of the plurality of links disposed at intervals on the connecting gear 152. It is fitted to the two connecting pins (157).
  • the plurality of links 150 are disposed to be inclined with respect to normals perpendicular to the respective axial directions of the input and output gear shafts 60a and 60b and the rear shaft 140, as shown in FIGS. 4, 7 and 8. do. That is, as shown in FIG. 7, the plurality of links 150 are disposed in respective axial directions of the crank shaft 40 and the rear shaft 140 disposed in the same direction as the input and output gear shafts 60a and 60b.
  • the inclination angle ⁇ is 1 ° to 10 ° with respect to the normal normal, preferably 2 ° to 5 °.
  • the plurality of links 150 are parallel to each other with the inclination angle ⁇ with respect to a normal line perpendicular to the respective axial straight lines of the input and output gear shafts 60a and 60b or the crank shaft 40 and the rear shaft 140. It maintains one positional relationship and rotates in the longitudinal and transverse directions.
  • the plurality of links 150 that is, three links 150 are rotated so that two links 150 of the three links 150 are positioned on the same line in the longitudinal direction and overlap each other, as shown in FIG. Even in the case (refer to the drawing when the link 150 is rotated in FIG. 4), since the inclination angle ⁇ in the lateral direction is spaced apart as shown in FIG. 8, it is possible to rotate without interfering with each other.
  • the plurality of links 150 is covered by the link stay 155 so as not visible to the outside can prevent damage from external impact.
  • the user operates the shift lever 35 disposed on the handle 30 to select one of the two ratchetes 85, 85 (R1, R2) disposed on the input gear set A side, and simultaneously If one of the three ratchetes (85, 85, 85; R3, R4, R5) arranged on the output gear set (B) side is selected, it becomes the number of cases of 2 * 3 as a whole and can serve as a six-speed transmission. .
  • the gear ratio of the planetary gears constituting the input gear set (A) and the output gear set (B) is selected so that the gear ratio of the six stages is appropriately distributed to meet the needs of the user.
  • the first ratchet (R3) can be fixed.
  • the table of FIG. 10 shows which ratchets can be fixed at the input and output in six cases to obtain the desired speed ratio (where several ratchets are denoted by the same reference numeral 85, but the cross-sectional view of the transmission is provided for clarity). (Refer to FIG. 9), since it is represented by R1 to R5, please understand.
  • ratchetes 85 and 85 (R1 and R3) are fixed as shown in FIGS. 5, 6, 9 and 10.
  • the ratchet (85, 85; R1, R3) is fixed to the ratchet in the cam groove 82 formed on the cam shaft (95).
  • the crank 38 rotates to rotate the crank shaft 40.
  • the crank gear 42 fixed thereto is also rotated. Since the crank gear 42 is meshed with the input gear 65 connected to the input gear shaft 60a, the sun gear fixed to the input gear shaft 60a together with the input gear 65 according to the rotation of the crank gear 42. 70 will also rotate.
  • the ring gear 90 which is not fixed by the ratchet 85 is idling, and the fixed ring gear 90 is arranged inside the sun. It serves as a support for transmitting the power of the gear 70 to the carrier 120 through a plurality of planetary gears 80 meshed with the sun gear 70. The power transmitted to the carrier 120 is moved to the output gear set (B).
  • the rotational power of the input gear shaft 60a selectively transmitted through the carrier 120 by the fixed ring gear 90 side fixes one of the plurality of ring gears 90 of the output gear set B. Is transmitted to the output gear shaft 60b.
  • the ring gear 90 which is not fixed to the ratchet 85 of the output gear set B is idle, and the fixed ring gear 90 has a plurality of gears engaged with the power of the carrier 120 disposed therein.
  • the planetary gears 80 serve as a support for transmitting to the sun gear 70. Since the sun gears 70 of the output gear set B are fixedly disposed on the output gear shaft 60b together with the output part 55, the power transmitted to the sun gear 70 is a rotational force for rotating the output part 55. Is implemented.
  • the plurality of output pins 57 fitted to the output unit 55 revolve around the output gear shaft 60b, and the plurality of links fitted to the plurality of output pins 57 150 transmits power to the rear axle 140 while rotating along the output pin (57). That is, the plurality of links 150 are disposed parallel to each other and inclined in the transverse direction between the plurality of output pins 57 and the plurality of connecting pins 157 so as not to interfere with each other while rotating in the longitudinal and transverse directions. Will be rotated. Therefore, the rotational power of the plurality of links 150 is transmitted to the connecting gear 152 via the connecting pin 157, and to the rear shaft 140 via the rear gear 142 meshed with the connecting gear 152. As it is transmitted, the rotational power is transmitted to the rear wheel 20.
  • stage 1 (S1) to step 6 (S6) refer to a table showing a stepped shift state shown in FIG. 10 and a schematic cross-sectional view of the transmission shown in FIG. Will be understood.
  • Bicycle chain drive system of the present invention does not apply a bevel gear is not required a separate drive shaft, there is an advantage that the user can directly shift to another stage without waiting after selecting the desired stage.
  • the present invention applies to the gearbox transmission and the plurality of links located in the center of the bicycle frame as a power transmission means, and by applying a plurality of parallel links between the transmission and the rear axle (rear) for a bicycle that can ensure a continuous and continuous power transmission Applicable to the chainless drive system.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)

Abstract

A chainless drive system for a bicycle, according to the present invention, comprises: a gear housing (50) including a crank shaft (40) having a crank (38) mounted thereon, an input gear shaft (60a) spaced apart from the crank shaft (40) and having an input gear (65) mounted on one side thereof, and an output gear shaft (60b) having an output part (55) mounted on an opposite side thereof; a rear shaft (140) having a rear-shaft gear (142) mounted on one side thereof; a connecting gear (152) engaged with the rear-shaft gear (142) and disposed so as to be rotatable relative to a link stay (155); and a plurality of links (150) between the output part (55), which is mounted on the output gear shaft (60b) of the gear housing (50), and the connecting gear (152), the links (150) being rotatable and being connected and arranged parallel to one another, wherein the plurality of links (150) are configured to rotate to an oblique angle in the longitudinal and lateral directions according to rotation of the crank shaft (40) without interference therebetween.

Description

자전거용 무체인 구동계Bicycle chain drive system for bicycle
본 발명은 자전거용 무체인 구동계에 관한 것으로, 더욱 상세하게는 자전거 프레임 중앙에 위치한 기어박스형 변속기와 복수개의 링크를 동력전달 수단으로 적용한 자전거용 무체인 구동계에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle chain drive system for a bicycle, and more particularly, to a bicycle chain drive system using a gearbox-type transmission located in the center of a bicycle frame and a plurality of links as power transmission means.
일반적으로 자전거는 페달측 스프라켓(체인링)과 후륜측 스프라켓을 연결하는 체인에 의해 동력전달이 이루어지는 구조를 갖는다. 그리고, 이와 같은 체인식 자전거는 페달측 및 후륜측에 각각 다른 크기를 갖는 스프라켓을 다단으로 구성하고, 체인을 스프라켓의 사이에서 이동시킴에 의해 변속비를 조절하게 된다. 그러나, 체인식 자전거는 체인에 도포된 윤활제가 옷이나 신체에 묻게 되어 위생적이지 못하고, 체인과 스프라켓 사이에 옷이 끼이거나, 체인이 스프라켓으로부터 이탈되어 사용자가 위험에 노출되거나 잦은 수리를 요하는 문제점을 내포하고 있다. 또한, 체인식 자전거는 주행중에 변속이 순차적으로 이루어지기 때문에 정지시에는 변속할 수 없고, 원하는 변속 단수를 얻기 위해 다소 시간이 걸리는 문제점이 있었다.In general, a bicycle has a structure in which power is transmitted by a chain connecting a pedal side sprocket (chain ring) and a rear wheel side sprocket. In addition, such a chain type bicycle is configured in multiple stages of sprockets having different sizes on the pedal side and the rear wheel side, and the speed ratio is adjusted by moving the chain between the sprockets. However, chain bicycles are not hygienic because the lubricant applied to the chains gets on the clothes or the body, and the clothes are caught between the chains and the sprockets, or the chains are separated from the sprockets, which exposes the user to danger or requires frequent repairs. It implies In addition, the chain type bicycle can not be shifted at the time of stop because the shift is made sequentially while running, there was a problem that it takes some time to obtain the desired gear stage.
한국등록특허 제10-1235186호(특허문헌 1)는 양단에 형성된 제1 베벨기어를 이용하여 크랭크축의 구동력을 후륜으로 전달하는 동력전달축을 구비한 무체인 자전거용 동력전달장치에 있어서, 상기 크랭크축, 또는 상기 후륜을 회전시키는 출력핀에 직경이 서로 다른 2개 이상의 고정기어가 일체형으로서 순차적으로 형성된 고정기어군; 상기 크랭크축 또는 상기 출력핀에 인접하여 회전가능하게 설치된 중공의 변속축; 상기 각 고정기어와 치합되도록 변속축에 각각 독립적으로 자유회전가능하게 설치된 아이들기어로 이루어진 아이들기어군; 상기 변속축에 내설되고, 상기 아이들기어중 어느 하나를 선택적으로 고정시키는 변속로크수단; 및 상기 동력전달축의 제1 베벨기어와 치합되도록 상기 변속축의 일측에 형성된 제2 베벨기어를 포함하는 변속부가 구비되고, 상기 변속축의 길이 방향을 따라 가이드 홈이 형성되도록 구성된다.Korean Patent No. 10-1235186 (Patent Document 1) is a non-chain bicycle power transmission device having a power transmission shaft for transmitting the driving force of the crankshaft to the rear wheel using the first bevel gear formed on both ends, the crankshaft Or a fixed gear group in which two or more fixed gears having different diameters are sequentially formed as an integral type on the output pin for rotating the rear wheels; A hollow transmission shaft rotatably installed adjacent to the crank shaft or the output pin; An idle gear group including idle gears that are freely rotatable independently of the shift shaft to engage with the fixed gears; Shift lock means built into the shift shaft and configured to selectively fix any one of the idle gears; And a second bevel gear formed at one side of the transmission shaft to be engaged with the first bevel gear of the power transmission shaft, and configured to form a guide groove along a length direction of the transmission shaft.
그러나, 특허문헌 1과 같은 무체인 자전거용 동력전달장치는 페달측과 후륜측에 각각 베벨기어를 적용하고 그 사이를 구동축을 통해 동력을 전달하게 되므로 프레임의 구조적 강성의 증가로 인한 중량상승, 소음과 마모, 마찰손실에 의한 낮은 동력효율 및 변속의 한계 같은 단점을 내포하고 있고, 제작비도 체인에 비해 비싼 단점을 내포하고 있다.However, the power transmission device for a chainless bicycle such as Patent Document 1 applies a bevel gear to the pedal side and the rear wheel, respectively, and transmits power through the drive shaft therebetween, so that the weight increase and the noise due to the structural rigidity of the frame are increased. It also has disadvantages such as low power efficiency due to wear and tear, frictional loss and the limitation of shifting, and manufacturing cost also has disadvantages that are more expensive than the chain.
본 발명의 목적은 종래 무체인 자전거에 적용된 베벨기어를 적용하지 않고 외부로 돌출된 구동축을 배제함으로써 외형상 균형 잡힌 구조로 미관상 뛰어난 디자인이 가능하고, 동시에 소음과 마찰 손실을 줄일 수 있는 자전거용 무체인 구동계를 제공함에 있다.An object of the present invention is to achieve aesthetically excellent design with a balanced structure in appearance by eliminating the drive shaft protruding to the outside without applying the bevel gear applied to the conventional bicycle chainless body, and at the same time can be reduced noise and friction loss body It is to provide a phosphorus drive system.
본 발명의 다른 목적은 변속기와 후륜축(뒷축) 사이에 복수개의 평행한 링크를 적용하여 확실하고 연속적인 동력전달을 가능하게 한 자전거용 무체인 구동계를 제공함에 있다.It is another object of the present invention to provide a bicycle-less drive system for bicycles which enables a reliable and continuous power transmission by applying a plurality of parallel links between a transmission and a rear wheel shaft (rear shaft).
본 발명의 또 다른 목적은 캐리어의 일측에 복수개의 열로 이루어진 입력기어 세트(A)가 배치하고 타측에 복수개의 열로 이루어진 출력기어 세트(B)를 배치한 기어박스형 변속기를 적용한 자전거용 무체인 구동계를 제공함에 있다.Still another object of the present invention is to provide a bicycle bodyless drive system to which a gearbox-type transmission in which a plurality of rows of input gear sets (A) is arranged on one side of a carrier and an output gear set (B) of a plurality of rows is arranged on the other side thereof is applied. In providing.
본 발명의 자전거용 무체인 구동계는 크랭크가 끼워지는 크랭크축과, 상기 크랭크축과 간격을 두고 평행한 선상에 일렬로 연속 배치되는 입력기어축과 출력기어축을 구비한 기어 하우징과; 일측에 뒷축기어가 끼워지는 뒷축과; 상기 뒷축기어와 치합되고 링크 스테이에 회전가능하게 배치된 연결기어와; 상기 기어 하우징의 출력기어축에 끼워진 출력부와 상기 연결기어의 사이에 회동 가능하고 서로 평행하게 연결 배치된 복수개의 링크를 포함하며, 상기 복수개의 링크는 크랭크축의 회전에 따라 경사진 각도로 종방향과 횡방향으로 서로 간섭되지 않게 회동하는 것을 특징으로 한다.A bicycle chain drive system for a bicycle according to the present invention includes a crank shaft into which a crank is fitted, and a gear housing including an input gear shaft and an output gear shaft continuously arranged in a line on a parallel line at a distance from the crank shaft; A rear shaft into which the rear shaft gear is fitted; A connecting gear meshed with the rear axle gear and rotatably disposed in a link stay; And a plurality of links rotatably arranged in parallel with each other between the output part fitted to the output gear shaft of the gear housing and the connecting gear, the plurality of links being longitudinally at an inclined angle according to the rotation of the crankshaft. Rotate so as not to interfere with each other in the transverse direction.
본 발명의 기어 하우징의 크랭크축에는 크랭크 기어가 끼워지고, 상기 기어 하우징의 입력기어축에는 입력기어가 끼워지며, 상기 기어 하우징의 출력기어축에는 출력부가 끼워지고, 상기 기어 하우징의 입력기어축의 입력기어와 출력기어축의 출력부의 사이에는 캐리어가 끼워질 수 있다.A crank gear is fitted to the crankshaft of the gear housing of the present invention, an input gear is fitted to the input gear shaft of the gear housing, an output part is fitted to the output gear shaft of the gear housing, and an input of the input gear shaft of the gear housing is input. The carrier can be fitted between the gear and the output of the output gear shaft.
본 발명의 캐리어의 일측은 복수개의 열로 이루어진 입력기어 세트(A)가 배치되고 캐리어의 타측은 복수개의 열로 출력기어 세트(B)가 배치되며, 상기 입력기어 세트(A) 및 출력기어 세트(B)의 각각은, 입력기어축 및 출력기어축에 각각 고정되어 끼워지는 썬기어와; 상기 썬기어에 치합되는 복수개의 유성기어와; 상기 유성기어와 치합되는 링기어를 포함할 수 있다.One side of the carrier of the present invention is a set of input gear set (A) consisting of a plurality of rows and the other side of the carrier is arranged an output gear set (B) in a plurality of rows, the input gear set (A) and the output gear set (B) Each of the), and the sun gear is fixed to each of the input gear shaft and the output gear shaft; A plurality of planetary gears meshed with the sun gear; It may include a ring gear meshing with the planetary gear.
본 발명의 기어 하우징은 입력기어 세트(A) 및 출력기어 세트(B)의 링기어의 외측에 각각 배치된 라쳇과, 상기 라쳇이 링기어의 이빨을 고정하기 위하여 외주연에 복수개의 캠홈이 형성된 캠축을 더 포함할 수 있다.Gear housing of the present invention has a ratchet disposed on the outer side of the ring gear of the input gear set (A) and the output gear set (B), respectively, the ratchet is formed with a plurality of cam grooves on the outer periphery to fix the teeth of the ring gear It may further include a camshaft.
본 발명의 자전거용 무체인 구동계는 크랭크가 끼워지는 크랭크축과; 상기 크랭크축과 간격을 두고 평행하게 배치되며, 복수개의 유성기어장치(C)가 회전가능하게 끼워지는 입력기어축 및 출력기어축과; 상기 복수개의 유성기어장치(C)중 적어도 한 개 이상을 선택적으로 고정하는 라쳇이 끼워지는 복수개의 캠홈이 형성된 캠축과; 일측에 뒷축기어가 끼워지는 뒷축과; 상기 뒷축기어와 치합되고 링크 스테이에 회전가능하게 배치된 연결기어와; 상기 출력기어축에 끼워진 출력부와, 상기 연결기어의 사이에 회동 가능하고 서로 평행하게 연결 배치된 복수개의 링크를 포함하며, 상기 복수개의 유성기어장치(C)는 캐리어와, 상기 캐리어의 양측(입력측 및 출력측)에 각각 복수개의 열로 배치되며 각각 입력기어축과 출력기어축에 고정되어 끼워지는 썬기어와, 상기 썬기어에 치합되는 복수개의 유성기어와, 상기 유성기어와 치합되는 링기어로 구성될 수 있다.Bicycle chain drive system of the present invention and the crank is fitted crank shaft; An input gear shaft and an output gear shaft which are arranged in parallel with the crank shaft at intervals and in which a plurality of planetary gear devices C are rotatably fitted; A camshaft having a plurality of cam grooves into which ratchets for selectively fixing at least one of the plurality of planetary gear devices (C) are fitted; A rear shaft into which the rear shaft gear is fitted; A connecting gear meshed with the rear axle gear and rotatably disposed in a link stay; An output portion fitted to the output gear shaft and a plurality of links rotatably arranged in parallel to each other between the connecting gears, wherein the plurality of planetary gear devices C includes a carrier and both sides of the carrier ( A sun gear arranged in a plurality of rows on the input side and the output side, respectively, fixed to the input gear shaft and the output gear shaft, a plurality of planetary gears meshed with the sun gear, and a ring gear meshed with the planetary gears. Can be.
본 발명의 자전거용 무체인 구동계는 종래 베벨기어를 적용한 무체인 자전거에 비하여 구동축이 별도로 외부로 돌출되지 않으므로 미관상 수월하며 사용자가 편리하게 자전거를 탈 수 있는 이점이 있다.Bicycle chain drive system of the present invention has the advantage that it is aesthetically easy and the user can easily ride a bicycle because the drive shaft does not protrude outward as compared to the conventional chainless bicycle to which bevel gears are applied.
본 발명의 자전거용 무체인 구동계는 변속기와 뒷바퀴 사이에 복수개의 링크를 적용하게 되므로 연속적인 동력전달이 가능하게 하고, 누구나 쉽게 변속을 할 수 있는 이점이 있다.Bicycle chain drive system of the present invention is to apply a plurality of links between the transmission and the rear wheels to enable continuous power transmission, there is an advantage that anyone can easily shift.
본 발명의 자전거용 무체인 구동계는 기어 하우징의 내부에 배치된 입력기어 세트(A), 캐리어 및 출력기어 세트(B)를 이용한 기어박스형 변속기를 자전거 프레임의 중심에 배치하여 자전거 전체적인 무게의 분포를 동력학적 관점에서 안정적이고 효율적으로 구성할 수 있는 이점이 있다.In the bicycle-less drive system of the present invention, the gearbox-type transmission using the input gear set (A), the carrier and the output gear set (B) disposed inside the gear housing is disposed at the center of the bicycle frame to distribute the weight distribution of the entire bicycle. From the dynamic point of view, there is an advantage that can be configured stably and efficiently.
도 1은 본 발명의 자전거용 무체인 구동계이 적용된 자전거의 사시도,1 is a perspective view of a bicycle to which the chainless drive system for a bicycle of the present invention is applied,
도 2는 본 발명의 요부인 기어 하우징의 개략적인 사시도,2 is a schematic perspective view of a gear housing which is a main part of the present invention;
도 3은 본 발명의 요부인 기어 하우징의 내부를 나타낸 사시도,3 is a perspective view showing the inside of a gear housing that is a main part of the present invention;
도 4는 본 발명의 요부인 변속기와 링크의 연결 및 동작관계를 나타낸 단면도,4 is a cross-sectional view showing the connection and operation of the transmission and the link that is the main part of the present invention;
도 5는 본 발명의 요부인 변속기를 입력측에서 본 것을 나타낸 것으로, 라쳇이 캠축의 캠홈에 배치되는 상태를 나타낸 사시도,5 is a perspective view showing a state in which a ratchet is disposed in a cam groove of a camshaft, as shown in FIG.
도 6은 도 5의 변속기를 출력측에서 본 것을 나타낸 사시도,6 is a perspective view showing the transmission of FIG. 5 seen from the output side;
도 7은 본 발명의 요부인 복수개의 링크가 경사지게 배치된 상태를 나타낸 도면,7 is a view showing a state in which a plurality of links which are main parts of the present invention are inclinedly arranged;
도 8은 도 7의 복수개의 링크 중 중첩되는 2개의 링크의 이동관계를 기하학적으로 나타낸 도면,FIG. 8 is a diagram illustrating geometrically a movement relationship between two overlapping links among a plurality of links of FIG. 7;
도 9는 본 발명의 요부인 변속기의 개략적인 단면도,9 is a schematic cross-sectional view of a transmission that is a main part of the present invention;
도 10은 본 발명의 요부인 변속기의 단계별 변속상태를 나타낸 도면이다.10 is a view showing a phase shift state of the transmission which is the main part of the present invention.
이하, 본 발명의 자전거용 무체인 구동계의 실시예를 첨부된 도면을 참조하여 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings an embodiment of the bicycle-less drive system for a bicycle of the present invention will be described.
본 발명의 무체인 자전거는 도 1에 도시된 바와 같이, 프레임(25)의 전방 일측에 배치된 포크(16)의 사이에 앞바퀴(10)가 끼워져 앞축(14)에 회전가능하게 고정되며, 프레임(25)의 후방 타측에 배치된 시트 스테이(27)의 사이에 뒷바퀴(20)가 뒷축(140)에 회전가능하게 고정된다. 상기 시트 스테이(27)와 후술하게 되는 링크 스테이(155)는 프레임(25)의 일부 구성이며, 일체로 구성하게 된다. 상기 프레임(25)의 소정부위에는 사용자가 앉을 수 있도록 안장(29)이 배치된다. 그리고, 핸들(30)은 일자형인 플랫바(Flat bar)나 라이저 바(Riser bar)를 적용하게 되고, 일측에는 후술하는 변속기를 조절하기 위한 변속레버(35)가 배치되며, 아울러 브레이크 레버(도시되지 않음)도 배치된다.As shown in FIG. 1, the bodyless bicycle of the present invention is fitted with a front wheel 10 between the forks 16 disposed on one front side of the frame 25 to be rotatably fixed to the front axle 14. The rear wheel 20 is rotatably fixed to the rear axle 140 between the seat stays 27 arranged on the other rear side of the back 25. The seat stay 27 and the link stay 155 which will be described later are a part of the frame 25 and are integrally formed. The saddle 29 is disposed at a predetermined portion of the frame 25 so that the user can sit. In addition, the handle 30 is a flat bar (Riser) or a riser bar (Riser bar) is applied to one side, the shift lever 35 for adjusting the transmission to be described later is disposed on one side, and the brake lever (not shown) Is not assigned).
본 발명의 자전거용 무체인 구동계는 도 1 및 도 2에 도시된 바와 같이, 자전거의 차체를 형성하는 프레임(25)의 중앙에 위치한 교차부분에 배치된 기어 하우징(50)과, 뒷축(140) 및 상기 기어 하우징(50)과 뒷축(140)의 사이에 회전 가능하게 배치된 복수개의 링크(150)로 크게 이루어지게 된다.As shown in FIGS. 1 and 2, the bicycleless drive system for a bicycle according to the present invention includes a gear housing 50 and a rear axle 140 disposed at an intersection located at the center of a frame 25 forming a vehicle body of a bicycle. And a plurality of links 150 rotatably disposed between the gear housing 50 and the rear shaft 140.
상기 기어 하우징(50)은 도 1 내지 도 3에 도시된 바와 같이, 크랭크(38)가 끼워지는 크랭크축(40)과, 상기 크랭크축(40)에 간격을 두고 평행한 선상에 일렬로 연속 배치되는 입력기어축(60a)과 출력기어축(60b)을 구비하게 된다. 상기 기어 하우징(50)의 입력기어축(60a)에는 입력기어(65)가 끼워지며, 상기 기어 하우징(50)의 출력기어축(60b)에는 출력부(55)가 끼워지게 된다. 그리고, 상기 크랭크(38)는 도시되지 않은 페달과 연동하게 된다. 참고로, 상기 기어 하우징(50)안에 구비된 입력기어축(60a) 및 출력기어축(60b)과 함께 후술하는 유성기어세트(C), 라쳇(85) 및 캠축(95)로 이루어진 변속기가 배치된다고 이해하기 바란다. 또한, 상기 기어 하우징(50)은 기어박스형 변속기와 혼용하여 기재하지만, 기어 하우징에서 단지 크랭축만을 배제한 것이 기어박스형 변속기이므로 동일 개념으로 이해하기 바란다.As shown in FIGS. 1 to 3, the gear housing 50 is continuously arranged in a row on a parallel line with a crank shaft 40 into which the crank 38 is fitted, and at a distance from the crank shaft 40. It is provided with an input gear shaft 60a and an output gear shaft 60b. The input gear 65 is fitted to the input gear shaft 60a of the gear housing 50, and the output part 55 is fitted to the output gear shaft 60b of the gear housing 50. The crank 38 is then interlocked with a pedal (not shown). For reference, a transmission composed of a planetary gear set C, a ratchet 85, and a cam shaft 95 to be described later together with an input gear shaft 60a and an output gear shaft 60b provided in the gear housing 50 are disposed. Please understand. In addition, the gear housing 50 is described as being mixed with the gearbox-type transmission, but it is understood that the same concept as the gearbox-type transmission excludes only the crankshaft from the gear housing.
상기 기어 하우징(50)의 크랭크축(40)에는 도 3, 도 5 및 도 6에 도시된 바와 같이, 크랭크 기어(42)가 동축으로 끼워지게 되고, 상기 입력 및 출력기어축(60a,60b)에는 입력기어(65), 썬기어(70) 및 캐리어(120)가 순차적으로 끼워지게 된다.3, 5 and 6, the crank gear 42 is fitted coaxially to the crank shaft 40 of the gear housing 50, the input and output gear shaft (60a, 60b) In the input gear 65, the sun gear 70 and the carrier 120 are inserted in sequence.
상기 캐리어(120)는 도 3에 도시된 바와 같이, 기어 하우징(50)의 입력기어축(60a)의 입력기어(65)와 출력기어축(60b)의 출력부(55)의 사이에는 배치된다. 그리고, 상기 캐리어(120)의 일측은 복수개의 열로 이루어진 입력기어 세트(A)가 배치되고, 상기 캐리어(120)의 타측은 복수개의 열로 이루어진 출력기어 세트(B)가 배치된다. As shown in FIG. 3, the carrier 120 is disposed between the input gear 65 of the input gear shaft 60a of the gear housing 50 and the output part 55 of the output gear shaft 60b. . In addition, one side of the carrier 120 has an input gear set A having a plurality of rows, and an output gear set B having a plurality of rows is disposed at the other side of the carrier 120.
상기 입력기어 세트(A) 및 출력기어 세트(B)는 사용자의 요구에 따라 열의 개수를 적절히 설정할 수 있지만, 일 실시예로 도 3, 도 5 및 도 6에 도시된 바와 같이, 입력기어 세트(A)를 2열로 적용하고, 출력기어 세트(B)를 3열로 적용한 것에 대하여만 설명하기로 한다(또한, 캐리어(120)의 일측은 2열로 입력기어 세트(A)가 배치되는 입력측이고 캐리어(120)의 타측은 3열로 출력기어 세트(B)가 배치되는 출력측이라고 이해하기 바란다).The input gear set (A) and the output gear set (B) can be appropriately set the number of columns according to the user's request, as shown in Figure 3, 5 and 6 as an embodiment, the input gear set ( Only when A) is applied in two rows and the output gear set B is applied in three rows will be described. (In addition, one side of the carrier 120 is an input side in which the input gear set A is arranged in two rows, and the carrier ( The other side of 120) is an output side in which the output gear set B is arranged in three rows).
상기 크랭크축(40)에 배치된 크랭크 기어(42)는 입력기어축(60a)에 배치된 입력기어(65)와 치합되어 있고, 상기 입력기어(65)의 후방에는 썬기어(70)가 입력기어축(60a)에 동축으로 고정되어 끼워지게 된다.The crank gear 42 disposed on the crank shaft 40 is meshed with the input gear 65 disposed on the input gear shaft 60a, and the sun gear 70 is input behind the input gear 65. Coaxially fixed to the gear shaft 60a is fitted.
상기 캐리어(120)의 양측에 각각 배치된 입력기어 세트(A) 및 출력기어 세트(B)의 각각은, 도 3, 도 5 및 도 6에 도시된 바와 같이, 입력기어축(60a) 및 출력기어축(60b)에 각각 고정되어 끼워지는 썬기어(70)와, 상기 썬기어(70)에 치합되는 복수개의 유성기어(80)와, 상기 유성기어(80)와 치합되는 링기어(90)로 이루어지게 된다. 그리고, 상기 입력기어 세트(A) 및 출력기어 세트(B)는 캐리어(120)(도 3 참조)를 중심으로 양측에 각각 배치된다.Each of the input gear set A and the output gear set B, which are disposed on both sides of the carrier 120, respectively, as illustrated in FIGS. 3, 5, and 6, the input gear shaft 60a and the output. A sun gear 70 fixedly fitted to the gear shaft 60b, a plurality of planetary gears 80 meshed with the sun gear 70, and a ring gear 90 meshed with the planetary gears 80. Will be made. The input gear set A and the output gear set B are disposed on both sides of the carrier 120 (see FIG. 3), respectively.
상기 썬기어(70)는 도 3, 도 5 및 도 6에 도시된 바와 같이, 입력기어축(60a) 및 출력기어축(60b)에 각각 고정된다. 그리고, 입력측에 배치된 썬기어(70)는 도 5 및 도 6에 도시된 바와 같이, 크랭크축(40)의 크랭크 기어(42)와 치합되는 입력기어(65)의 후방에 배치되며, 복수개의 유성기어(80)와 치합되게 된다. 여기서, 상기 입력기어(65)도 입력기어축(60a)에 고정되어 끼워진다. 그리고, 상기 복수개의 유성기어(80)의 외측에는 링기어(90)가 배치되고, 상기 링기어(90)는 그 내측에 배치된 복수개의 유성기어(80)와 치합하게 된다.3, 5 and 6, the sun gear 70 is fixed to the input gear shaft 60a and the output gear shaft 60b, respectively. Then, the sun gear 70 disposed on the input side is disposed behind the input gear 65 meshed with the crank gear 42 of the crankshaft 40, as shown in Figure 5 and 6, It is meshed with the planetary gear 80. Here, the input gear 65 is also fixedly fitted to the input gear shaft 60a. A ring gear 90 is disposed outside the plurality of planetary gears 80, and the ring gear 90 is engaged with the plurality of planetary gears 80 disposed therein.
상기 입력기어 세트(A) 및 출력기어 세트(B)의 설명은 캐리어(120)를 중심으로 설명하였지만, 일반적으로 유성기어장치(C)는 캐리어(120)를 포함한 구성이므로, 캐리어(120)와, 상기 캐리어(120)의 일측(입력측) 및 타측(출력측)에 각각 복수개의 열로 배치되며 각각 입력기어축(60a) 및 출력기어축(60b)에 고정되어 끼워지는 썬기어(70)와, 상기 썬기어(70)에 치합되는 복수개의 유성기어(80)와, 상기 유성기어(80)와 치합되는 링기어(90)로 구성할 수도 있다. 즉, 캐리어(120)를 중심으로 입력기어 세트(A) 및 출력기어 세트(B)로 구성할 수도 있고, 캐리어(120)와 입력기어 세트(A) 및 출력기어 세트(B)를 포함한 유성기어장치(C)로 구성할 수도 있다.Description of the input gear set (A) and the output gear set (B) has been described centering on the carrier (120), but generally the planetary gear device (C) is a configuration including the carrier (120), the carrier 120 and And a sun gear 70 disposed in a plurality of rows on one side (input side) and the other side (output side) of the carrier 120 and fixedly fitted to the input gear shaft 60a and the output gear shaft 60b, respectively, A plurality of planetary gears 80 meshed with the sun gear 70 and ring gears 90 meshed with the planetary gears 80 may be included. That is, it may be composed of the input gear set (A) and the output gear set (B) around the carrier 120, the planetary gear including the carrier 120, the input gear set (A) and the output gear set (B) It can also comprise a device (C).
상기 기어 하우징(50)은 도 2, 도 5 및 도 6에 도시된 바와 같이, 입력기어 세트(A) 및 출력기어 세트(B)의 링기어(90)의 외측에 각각 배치된 라쳇(85)과, 상기 라쳇(85)이 링기어(90)의 이빨(93)을 고정하기 위하여 외주연에 복수개의 캠홈(82)이 형성된 캠축(95)을 더 포함하게 된다.2, 5 and 6, the gear housing 50 is a ratchet 85 disposed outside the ring gear 90 of the input gear set (A) and the output gear set (B), respectively. In addition, the ratchet 85 further includes a camshaft 95 having a plurality of cam grooves 82 formed on an outer circumference thereof to fix the teeth 93 of the ring gear 90.
상기 뒷축(140)은 도 4에 도시된 바와 같이, 그 일측에 뒷축기어(142)가 끼워지게 된다. 즉, 상기 뒷축(140)에는 뒷축기어(142)가 동축으로 끼워지게 된다. 그리고, 상기 뒷축기어(142)는 연결기어축(154)에 끼워진 연결기어(152)와 치합되고, 연결기어(152)에는 후술하는 복수개의 링크(150)를 연결하기 위한 복수개의 연결핀(157)이 배치된다. 상기 연결기어(152)는 도 1 및 도 4에 도시된 바와 같이, 프레임(25)의 일부 구성인 링크 스테이(155)에 배치된 연결기어축(154)에 회전 가능하게 끼워지게 된다. 상기 연결핀(157)은 도 4에 도시된 바와 같이, 뒷축(140)으로부터 소정의 간격을 두고 배치된다.As shown in FIG. 4, the rear shaft 140 is fitted with the rear shaft gear 142 on one side thereof. That is, the rear shaft gear 142 is fitted coaxially to the rear shaft 140. In addition, the rear gear 142 is meshed with the connecting gear 152 fitted to the connecting gear shaft 154, the connecting gear 152, a plurality of connecting pins 157 for connecting a plurality of links 150 to be described later. ) Is placed. As shown in FIGS. 1 and 4, the connecting gear 152 is rotatably fitted to the connecting gear shaft 154 disposed in the link stay 155 that is a part of the frame 25. As shown in FIG. 4, the connection pins 157 are disposed at a predetermined distance from the rear shaft 140.
상기 복수개의 링크(150)는 도 4에 도시된 바와 같이, 기어 하우징(50)의 출력기어축(60b)에 끼워진 출력부(55)와 뒷축기어(142)에 치합된 연결기어(152)의 사이에 회전 가능하게 평행으로 배치된다. 여기서, 상기 복수개의 링크(150)의 개수는 한 개 또는 두 개의 링크를 적용할 때 발생되는 사점(dead point)이 없도록 3개를 적용하였지만, 사용자의 요구에 따라 그 개수를 변경할 수도 있다. 그리고, 상기 복수개의 링크(150)는 크랭크축(40)의 회전에 따라 경사진 각도로 종방향 및 횡방향으로 서로 간섭하지 않게 회동한다. 즉, 상기 복수개의 링크(150)는 그 일측이 출력부(55)에 간격을 두고 배치된 복수개의 출력핀(57)에 끼워지고, 그 타측이 연결기어(152)에 간격을 두고 배치된 복수개의 연결핀(157)에 끼워지게 된다.As illustrated in FIG. 4, the plurality of links 150 are connected to the output gear 55 fitted to the output gear shaft 60b of the gear housing 50 and the coupling gear 152 meshed with the rear shaft gear 142. It is arranged in parallel rotatably between. Here, the number of the plurality of links 150 is applied to three so that there is no dead point generated when one or two links are applied, but the number may be changed according to a user's request. In addition, the plurality of links 150 are rotated so as not to interfere with each other in the longitudinal direction and the transverse direction at an inclined angle according to the rotation of the crankshaft 40. That is, the plurality of links 150 are fitted to a plurality of output pins 57, one side of which is arranged at intervals on the output unit 55, the other side of the plurality of links disposed at intervals on the connecting gear 152. It is fitted to the two connecting pins (157).
상기 복수개의 링크(150)는 도 4, 도 7 및 도 8에 도시된 바와 같이, 입력 및 출력기어축(60a,60b) 및 뒷축(140)의 각각의 축방향에 수직인 법선에 대하여 경사지게 배치된다. 즉, 상기 복수개의 링크(150)는 도 7에 도시된 바와 같이, 입력 및 출력기어축(60a,60b)과 동일 방향으로 배치된 크랭크축(40) 및 뒷축(140)의 각각의 축방향에 수직인 법선에 대하여 경사각(α)은 1°내지 10°이며, 바람직하게는 2°내지 5°이다. The plurality of links 150 are disposed to be inclined with respect to normals perpendicular to the respective axial directions of the input and output gear shafts 60a and 60b and the rear shaft 140, as shown in FIGS. 4, 7 and 8. do. That is, as shown in FIG. 7, the plurality of links 150 are disposed in respective axial directions of the crank shaft 40 and the rear shaft 140 disposed in the same direction as the input and output gear shafts 60a and 60b. The inclination angle α is 1 ° to 10 ° with respect to the normal normal, preferably 2 ° to 5 °.
상기 복수개의 링크(150)는 입력 및 출력기어축(60a,60b)이나 크랭크축(40) 그리고 뒷축(140)의 각각의 축방향 직선에 수직인 법선에 대하여 상기 경사각(α)을 갖고 서로 평행한 위치관계를 유지하며 종방향과 횡방향으로 회동하게 된다. 상기 복수개의 링크(150) 즉, 3개의 링크(150)가 회동하여 3개의 링크(150) 중 2개의 링크(150)가 도 4에 도시된 바와 같이, 종방향으로 동일 선상에 위치하여 겹치게 되는 경우(도 4에서 링크(150)가 회동한 경우의 도면 참조)에도 횡방향의 상기 경사각(α)에 의하여 도 8과 같이 이격됨으로 인하여 서로 간섭되지 않고 회동할 수 있게 된다.The plurality of links 150 are parallel to each other with the inclination angle α with respect to a normal line perpendicular to the respective axial straight lines of the input and output gear shafts 60a and 60b or the crank shaft 40 and the rear shaft 140. It maintains one positional relationship and rotates in the longitudinal and transverse directions. The plurality of links 150, that is, three links 150 are rotated so that two links 150 of the three links 150 are positioned on the same line in the longitudinal direction and overlap each other, as shown in FIG. Even in the case (refer to the drawing when the link 150 is rotated in FIG. 4), since the inclination angle α in the lateral direction is spaced apart as shown in FIG. 8, it is possible to rotate without interfering with each other.
한편, 상기 복수개의 링크(150)는 링크 스테이(155)에 의해 외부로 보이지 않도록 덮어지게 되므로 외부의 충격으로부터 손상을 방지할 수 있다.On the other hand, the plurality of links 150 is covered by the link stay 155 so as not visible to the outside can prevent damage from external impact.
상기 구성을 갖는 본 발명의 자전거용 무체인 구동계의 동작방법(입력기어 세트(A)가 2열로 이루어지고 출력기어 세트(B)가 3열로 이루어진 6단 기어박스형 변속기의 동작방법)을 설명하면 다음과 같다.Referring to the operation method of the bicycle chain drive system of the present invention having the above configuration (operation method of a six-speed gearbox type transmission in which the input gear set (A) consists of two rows and the output gear set (B) consists of three rows) Same as
먼저, 사용자가 핸들(30)에 배치된 변속레버(35)를 조작하여, 입력기어 세트(A)측에 배치된 2개의 라쳇(85,85; R1,R2) 중 한 개를 선택하고, 동시에 출력기어 세트(B)측에 배치된 3개의 라쳇(85,85,85; R3,R4,R5)중 하나를 선택하면 전체적으로 2*3의 경우의 수가 되어 6단 변속기의 역할을 수행할 수 있다. 이때, 입력기어 세트(A)와 출력기어 세트(B)를 구성하는 유성기어들의 기어비는 구성된 6단의 변속비가 사용자의 요구를 충족할 수 있게 적절히 분포되도록 선택한다.First, the user operates the shift lever 35 disposed on the handle 30 to select one of the two ratchetes 85, 85 (R1, R2) disposed on the input gear set A side, and simultaneously If one of the three ratchetes (85, 85, 85; R3, R4, R5) arranged on the output gear set (B) side is selected, it becomes the number of cases of 2 * 3 as a whole and can serve as a six-speed transmission. . At this time, the gear ratio of the planetary gears constituting the input gear set (A) and the output gear set (B) is selected so that the gear ratio of the six stages is appropriately distributed to meet the needs of the user.
예를 들어, 도 5, 도 6, 도 9 및 도 10에서, 입력기어 세트(A)에서 라쳇(85)을 기준으로 하여 2번째 라쳇(R2)이 고정된 경우에는 출력기어의 선택에 의해 1단, 2단 및 3단을 선택할 수 있고, 1번째 라쳇(R1)이 고정된 경우에는 4단, 5단 및 6단을 선택할 수 있다. For example, in FIGS. 5, 6, 9, and 10, when the second ratchet R2 is fixed on the basis of the ratchet 85 in the input gear set A, 1 is selected by the output gear. However, two stages and three stages can be selected. When the first ratchet R1 is fixed, four stages, five stages and six stages can be selected.
즉, 1단(S1)을 선택하고자 하면, 2번째 라쳇(R2)과 함께 5번째 라쳇(R5)을 고정하면 되고, 6단(S6)을 선택한 경우라면, 1번째 라쳇(R1)과 함께 3번째 라쳇(R3)을 고정하면 된다. 도 10의 표는 6개의 경우에 입력과 출력에서 어떤 라쳇을 고정하여 원하는 단의 변속비를 얻을 수 있는지를 나타낸다(여기서, 복수개의 라쳇은 도면부호 85로 동일한 부호를 적용하였지만 이해를 돕기 위해서 변속기 단면도(도9 참조)에서는 R1~R5로 나타냈으므로 이해하기 바란다). That is, if the first stage S1 is selected, the fifth ratchet R5 is fixed together with the second ratchet R2. If the sixth stage S6 is selected, the first ratchet R3 is set to 3 The first ratchet (R3) can be fixed. The table of FIG. 10 shows which ratchets can be fixed at the input and output in six cases to obtain the desired speed ratio (where several ratchets are denoted by the same reference numeral 85, but the cross-sectional view of the transmission is provided for clarity). (Refer to FIG. 9), since it is represented by R1 to R5, please understand.
상기 실시예에서 입력기어축(60a)을 통해 들어온 동력은 입력기어 세트(A)에서 감속이 이루어진 상태로 캐리어(120)를 통하여 출력기어 세트(B)로 전달되고, 출력기어 세트(B)에서는 가속이 이루어져 출력기어축(60b)을 통해 동력이 전달된다. 따라서, 본 실시예와 같은 6단 변속을 위해서는 입력기어 세트(A)를 구성하는 두개의 열의 감속비의 차이는 출력기어 세트(B)를 구성하는 세 개의 열의 가속비 보다 커야함을 알 수 있다.In the above embodiment, power input through the input gear shaft 60a is transmitted to the output gear set B through the carrier 120 in a state where the speed reduction is made in the input gear set A, and in the output gear set B, Acceleration takes place and power is transmitted through the output gear shaft 60b. Therefore, for the six-speed shift as in the present embodiment, it can be seen that the difference in the reduction ratios of the two columns constituting the input gear set A must be greater than the acceleration ratio of the three rows constituting the output gear set B.
사용자가 6단(S6)을 선택한 경우는 도 5, 도 6, 도 9 및 도 10에 도시된 바와 같이, 라쳇(85,85; R1,R3)가 고정된다. 이때, 상기 라쳇(85,85; R1,R3)는 캠축(95)에 형성된 캠홈(82)에 상기 라쳇이 고정하게 된다. 이와 같은 상태에서 사용자가 크랭크(38)에 연결된 패달(도시되지 않음)을 밟게 되면, 크랭크(38)가 회전하면서 크랭크축(40)을 회전시키게 된다. 상기 크랭크축(40)이 회전되면 여기에 고정 연결된 크랭크 기어(42)도 회전되게 된다. 상기 크랭크 기어(42)는 입력기어축(60a)에 연결된 입력기어(65)와 치합되므로 크랭크 기어(42)의 회전에 따라 입력기어(65)와 함께 입력기어축(60a)에 고정된 썬기어(70)도 회전하게 된다. 상기 입력기어 세트(A)의 복수개의 링기어(90)중 라쳇(85)에 의해 고정되지 않은 링기어(90)는 공회전을 하게 되고, 고정된 링기어(90)는 그 내측에 배치된 썬기어(70)의 동력을 썬기어(70)와 치합된 복수개의 유성기어(80)들을 통해 캐리어(120)로 전달하는 지지대 역할을 하게 된다. 이렇게 캐리어(120)에 전달된 동력은 출력기어 세트(B)로 이동한다.When the user selects six stages S6, ratchetes 85 and 85 (R1 and R3) are fixed as shown in FIGS. 5, 6, 9 and 10. At this time, the ratchet (85, 85; R1, R3) is fixed to the ratchet in the cam groove 82 formed on the cam shaft (95). In this state, when the user steps on a pedal (not shown) connected to the crank 38, the crank 38 rotates to rotate the crank shaft 40. When the crankshaft 40 is rotated, the crank gear 42 fixed thereto is also rotated. Since the crank gear 42 is meshed with the input gear 65 connected to the input gear shaft 60a, the sun gear fixed to the input gear shaft 60a together with the input gear 65 according to the rotation of the crank gear 42. 70 will also rotate. Of the plurality of ring gears 90 of the input gear set A, the ring gear 90 which is not fixed by the ratchet 85 is idling, and the fixed ring gear 90 is arranged inside the sun. It serves as a support for transmitting the power of the gear 70 to the carrier 120 through a plurality of planetary gears 80 meshed with the sun gear 70. The power transmitted to the carrier 120 is moved to the output gear set (B).
상기 고정된 링기어(90)측에 의해 선택적으로 캐리어(120)를 통해 전달된 입력기어축(60a)의 회전동력은 출력기어 세트(B)의 복수개의 링기어(90) 중 한 개를 고정하여 출력기어축(60b)으로 전달된다. 출력기어 세트(B)의 라쳇(85)에 고정되지 않은 링기어(90)는 공회전을 하게 되고, 고정된 링기어(90)는 그 내측에 배치된 캐리어(120)의 동력을 치합된 복수개의 유성기어(80)들을 통해 썬기어(70)로 전달하는 지지대 역할을 하게 된다. 출력기어 세트(B)의 썬기어(70)들은 출력부(55)와 함께 출력기어축(60b)에 고정 배치되었으므로 썬기어(70)로 전달된 동력은 출력부(55)를 회전시키는 회전력으로 구현된다.The rotational power of the input gear shaft 60a selectively transmitted through the carrier 120 by the fixed ring gear 90 side fixes one of the plurality of ring gears 90 of the output gear set B. Is transmitted to the output gear shaft 60b. The ring gear 90 which is not fixed to the ratchet 85 of the output gear set B is idle, and the fixed ring gear 90 has a plurality of gears engaged with the power of the carrier 120 disposed therein. The planetary gears 80 serve as a support for transmitting to the sun gear 70. Since the sun gears 70 of the output gear set B are fixedly disposed on the output gear shaft 60b together with the output part 55, the power transmitted to the sun gear 70 is a rotational force for rotating the output part 55. Is implemented.
상기 출력부(55)가 회전하면, 출력부(55)에 끼워진 복수개의 출력핀(57)은 출력기어축(60b) 주위를 공전하게 되며, 복수개의 출력핀(57)에 끼워진 복수개의 링크(150)가 출력핀(57)을 따라 회동하면서 동력을 뒷축(140)으로 전달한다. 즉, 상기 복수개의 링크(150)는 복수개의 출력핀(57)과 복수개의 연결핀(157)의 사이에 서로 평행하고 횡방향으로는 경사지게 배치되므로 종방향과 횡방향으로 회전하면서 서로 간섭되지 않게 회동하게 된다. 따라서, 상기 복수개의 링크(150)의 회전동력은 연결핀(157)을 거쳐서 연결기어(152)에 전달되고, 상기 연결기어(152)와 치합된 뒷축기어(142)를 거쳐서 뒷축(140)에 전달되므로 뒷바퀴(20)에 회전동력이 전달되게 된다.When the output unit 55 rotates, the plurality of output pins 57 fitted to the output unit 55 revolve around the output gear shaft 60b, and the plurality of links fitted to the plurality of output pins 57 150 transmits power to the rear axle 140 while rotating along the output pin (57). That is, the plurality of links 150 are disposed parallel to each other and inclined in the transverse direction between the plurality of output pins 57 and the plurality of connecting pins 157 so as not to interfere with each other while rotating in the longitudinal and transverse directions. Will be rotated. Therefore, the rotational power of the plurality of links 150 is transmitted to the connecting gear 152 via the connecting pin 157, and to the rear shaft 140 via the rear gear 142 meshed with the connecting gear 152. As it is transmitted, the rotational power is transmitted to the rear wheel 20.
이와 같이, 사용자가 소정의 변속비(1단(S1) 내지 6단(S6))을 선택하는 경우에는 도 10에 도시된 단계별 변속 상태를 나타낸 표와 도 9에 도시된 변속기의 개략적인 단면도를 참조하면 이해될 것이다.As such, when the user selects a predetermined transmission ratio (stage 1 (S1) to step 6 (S6)), refer to a table showing a stepped shift state shown in FIG. 10 and a schematic cross-sectional view of the transmission shown in FIG. Will be understood.
본 발명의 자전거용 무체인 구동계는 베벨 기어를 적용하지 않으므로 별도의 구동축이 요구되지 않고 아울러, 사용자가 원하는 단을 선택한 후 기다리지 않고 바로 다른 단으로 변속할 수 있는 이점이 있다. Bicycle chain drive system of the present invention does not apply a bevel gear is not required a separate drive shaft, there is an advantage that the user can directly shift to another stage without waiting after selecting the desired stage.
본 발명은 자전거 프레임 중앙에 위치한 기어박스형 변속기와 복수개의 링크를 동력전달 수단으로 적용하고, 변속기와 후륜축(뒷축) 사이에 복수개의 평행한 링크를 적용하여 확실하고 연속적인 동력전달이 가능한 자전거용 무체인 구동계에 적용할 수 있다.The present invention applies to the gearbox transmission and the plurality of links located in the center of the bicycle frame as a power transmission means, and by applying a plurality of parallel links between the transmission and the rear axle (rear) for a bicycle that can ensure a continuous and continuous power transmission Applicable to the chainless drive system.

Claims (7)

  1. 무체인 자전거에 있어서,In a chainless bike,
    크랭크(38)가 끼워지는 크랭크축(40)과, 상기 크랭크축(40)과 간격을 두고 평행한 선상에 일렬로 연속 배치되는 입력기어축(60a)과 출력기어축(60b)을 구비한 기어 하우징(50)과;A gear having a crank shaft 40 into which the crank 38 is fitted, and an input gear shaft 60a and an output gear shaft 60b that are continuously arranged in a row on a parallel line at a distance from the crank shaft 40. A housing 50;
    일측에 뒷축기어(142)가 끼워지는 뒷축(140)과;A rear shaft 140 into which the rear shaft gear 142 is fitted;
    상기 뒷축기어(142)와 치합되고, 링크 스테이(155)에 회전가능하게 배치된 연결기어(152)와;A connecting gear 152 meshed with the rear shaft gear 142 and rotatably disposed in the link stay 155;
    상기 기어 하우징(50)의 출력기어축(60b)에 끼워진 출력부(55)와 상기 연결기어(152)의 사이에 회동 가능하고 서로 평행하게 배치된 복수개의 링크(150)를 포함하며,It includes a plurality of links (150) rotatably arranged in parallel between the output unit 55 and the connecting gear 152 fitted to the output gear shaft 60b of the gear housing 50,
    상기 복수개의 링크(150)는 크랭크축(40)의 회전에 따라 경사진 각도로 종방향과 횡방향으로 서로 간섭하지 않게 회동되는 것을 특징으로 하는 자전거용 무체인 구동계.The plurality of links (150) is a bicycle chain drive system for a bicycle, characterized in that is rotated so as not to interfere with each other in the longitudinal and transverse direction at an inclined angle according to the rotation of the crankshaft (40).
  2. 제1항에 있어서,The method of claim 1,
    상기 기어 하우징(50)의 크랭크축(40)에는 크랭크 기어(42)가 끼워지고, 상기 기어 하우징(50)의 입력기어축(60a)에는 입력기어(65)가 끼워지며, 상기 기어 하우징(50)의 출력기어축(60b)에는 출력부(55)가 끼워지고, 상기 기어 하우징(50)의 입력기어축(60a)의 입력기어(65)와 출력기어축(60b)의 출력부(55)의 사이에는 캐리어(120)가 끼워지는 것을 특징으로 하는 자전거용 무체인 구동계.A crank gear 42 is fitted to the crankshaft 40 of the gear housing 50, an input gear 65 is fitted to the input gear shaft 60a of the gear housing 50, and the gear housing 50. The output unit 55 is fitted to the output gear shaft 60b of the output gear shaft 60b, and the input gear 65 of the input gear shaft 60a of the gear housing 50 and the output unit 55 of the output gear shaft 60b. Bicycle chain drive system, characterized in that the carrier 120 is sandwiched between.
  3. 제2항에 있어서,The method of claim 2,
    상기 캐리어(120)의 일측은 복수개의 열로 이루어진 입력기어 세트(A)가 배치되고 상기 캐리어(120)의 타측은 복수개의 열로 출력기어 세트(B)가 배치되며,One side of the carrier 120 is arranged an input gear set (A) consisting of a plurality of rows and the other side of the carrier 120 is arranged an output gear set (B) in a plurality of rows,
    상기 입력기어 세트(A) 및 출력기어 세트(B)의 각각은,Each of the input gear set (A) and the output gear set (B),
    입력 및 출력기어축(60a,60b)에 각각 고정되어 끼워지는 썬기어(70)와;A sun gear 70 fixedly fitted to the input and output gear shafts 60a and 60b, respectively;
    상기 썬기어(70)에 치합되는 복수개의 유성기어(80)와;A plurality of planetary gears 80 meshed with the sun gears 70;
    상기 유성기어(80)와 치합되는 링기어(90)를 포함하는 것을 특징으로 하는 자전거용 무체인 구동계. Bicycle chain drive system, characterized in that it comprises a ring gear 90 is meshed with the planetary gear (80).
  4. 제1항에 있어서,The method of claim 1,
    상기 기어 하우징(50)은,The gear housing 50,
    입력기어 세트(A) 및 출력기어 세트(B)의 링기어(90)의 외측에 각각 배치된 라쳇(85)과;Ratchets 85 disposed outside the ring gear 90 of the input gear set A and the output gear set B;
    상기 라쳇(85)이 링기어(90)의 이빨(93)을 고정하기 위하여 외주연에 복수개의 캠홈(82)이 형성된 캠축(95)을 더 포함하는 것을 특징으로 하는 자전거용 무체인 구동계.The ratchet (85) further comprises a camshaft (95) formed with a plurality of cam grooves (82) on the outer circumference to fix the teeth (93) of the ring gear (90).
  5. 제1항에 있어서,The method of claim 1,
    상기 복수개의 링크(150)는 일측이 출력부(55)에 간격을 두고 배치된 복수개의 출력핀(57)에 각각 끼워지고 타측이 연결기어(152)에 간격을 두고 배치된 복수개의 연결핀(157)에 각각 끼워지는 것을 특징으로 하는 자전거용 무체인 구동계.The plurality of links 150 are connected to a plurality of output pins 57, one side of which is spaced apart from the output unit 55, and the other side of the plurality of connection pins that are spaced apart from the connection gear 152 ( 157) each of the bicycle chain drive system characterized in that it is fitted.
  6. 무체인 자전거에 있어서,In a chainless bike,
    크랭크(38)가 끼워지는 크랭크축(40)과;A crank shaft 40 into which the crank 38 is fitted;
    상기 크랭크축(40)과 간격을 두고 평행하게 배치되며, 복수개의 유성기어장치(C)가 회전가능하게 끼워지는 입력 및 출력기어축(60a,60b)과;An input and output gear shaft (60a, 60b) disposed in parallel with the crank shaft (40) at intervals and rotatably fitted with a plurality of planetary gear devices (C);
    상기 복수개의 유성기어장치(C)중 적어도 한 개 이상을 선택적으로 고정하는 라쳇(85)이 끼워지는 복수개의 캠홈(82)이 형성된 캠축(95)과; A camshaft (95) formed with a plurality of cam grooves (82) into which a ratchet (85) for selectively fixing at least one or more of the plurality of planetary gear devices (C) is fitted;
    일측에 뒷축기어(142)가 끼워지는 뒷축(140)과;A rear shaft 140 into which the rear shaft gear 142 is fitted;
    상기 뒷축기어(142)와 치합되고, 링크 스테이(155)에 회전가능하게 배치된 연결기어(152)와; A connecting gear 152 meshed with the rear shaft gear 142 and rotatably disposed in the link stay 155;
    상기 출력기어축(60b)에 끼워진 출력부(55)와, 상기 연결기어(152)의 사이에회동 가능하고 서로 평행하게 연결 배치된 복수개의 링크(150)를 포함하며,An output part 55 fitted to the output gear shaft 60b and a plurality of links 150 rotatably arranged in parallel with each other between the connecting gear 152 and
    상기 복수개의 유성기어장치(C)는 캐리어(120)와, 상기 캐리어(120)의 양측에 각각 복수개의 열로 배치되며 각각 입력기어축(60a) 및 출력기어축(60b)에 고정되어 끼워지는 썬기어(70)와, 상기 썬기어(70)에 치합되는 복수개의 유성기어(80)와, 상기 유성기어(80)와 치합되는 링기어(90)를 포함하는 것을 특징으로 하는 자전거용 무체인 구동계.The plurality of planetary gear devices C are arranged in a plurality of rows on both sides of the carrier 120 and the carrier 120, respectively, and are fixed to the input gear shaft 60a and the output gear shaft 60b. A bicycle-less chain drive system comprising a gear 70, a plurality of planetary gears 80 meshed with the sun gear 70, and a ring gear 90 meshed with the planetary gears 80. .
  7. 제6항에 있어서,The method of claim 6,
    상기 복수개의 링크(150)는 입력 및 출력기어축(60a,60b)이나 크랭크축(40) 그리고 뒷축(140)의 각각의 축방향 직선에 수직인 법선에 대하여 경사지게 배치되어 회동시 서로 간섭이 일어나지 않는 것을 특징으로 하는 자전거용 무체인 구동계.The plurality of links 150 are disposed to be inclined with respect to normals perpendicular to the axial straight lines of the input and output gear shafts 60a and 60b or the crank shaft 40 and the rear shaft 140 so that they do not interfere with each other during rotation. Bicycle chain drive system, characterized in that not.
PCT/KR2016/010397 2015-09-23 2016-09-19 Chainless drive system for bicycle WO2017052141A1 (en)

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CN113028021A (en) * 2021-02-26 2021-06-25 苏州市职业大学 Chainless multi-stage speed change mechanism

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KR20110004539A (en) * 2009-07-08 2011-01-14 윤근수 Power transmission apparatus of chainless bicycle
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CN113028021B (en) * 2021-02-26 2024-05-17 苏州市职业大学 Chainless multistage speed change mechanism

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